utils/screenshotgen/src/autocapture.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        autocapture.cpp
   3 // Purpose:     Implement wxCtrlMaskOut class
   4 // Author:      Utensil Candel (UtensilCandel@@gmail.com)
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx/wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #ifdef __BORLANDC__
  13     #pragma hdrstop
  14 #endif
  15
  16 // for all others, include the necessary headers
  17 #ifndef WX_PRECOMP
  18     #include "wx/wx.h"
  19 #endif
  20
  21 #include <wx/filename.h>
  22 #include "autocapture.h"
  23
  24
  25 // ----------------------------------------------------------------------------
  26 // AutoCaptureMechanism
  27 // ----------------------------------------------------------------------------
  28
  29 /* static */
  30 wxBitmap AutoCaptureMechanism::Capture(int x, int y, int width, int height)
  31 {
  32     // Somehow wxScreenDC.Blit() doesn't work under Mac for now. Here is a trick.
  33 #ifdef __WXMAC__
  34
  35     // wxExecute(_T("screencapture -x ") + tempfile, wxEXEC_SYNC);
  36
  37     system("screencapture -x /tmp/wx_screen_capture.png");
  38
  39     wxBitmap fullscreen;
  40
  41     do
  42     {
  43         fullscreen = wxBitmap(_T("/tmp/wx_screen_capture.png"), wxBITMAP_TYPE_PNG);
  44     }
  45     while(!fullscreen.IsOk());
  46
  47     wxBitmap screenshot = fullscreen.GetSubBitmap(wxRect(x,y,width,height));
  48
  49 #else // Under other paltforms, take a real screenshot
  50
  51     // Create a DC for the whole screen area
  52     wxScreenDC dcScreen;
  53
  54     // Create a Bitmap that will later on hold the screenshot image
  55     // Note that the Bitmap must have a size big enough to hold the screenshot
  56     // -1 means using the current default colour depth
  57     wxBitmap screenshot(width, height, -1);
  58
  59     // Create a memory DC that will be used for actually taking the screenshot
  60     wxMemoryDC memDC;
  61
  62     // Tell the memory DC to use our Bitmap
  63     // all drawing action on the memory DC will go to the Bitmap now
  64     memDC.SelectObject(screenshot);
  65
  66     // Blit (in this case copy) the actual screen on the memory DC
  67     // and thus the Bitmap
  68     memDC.Blit( 0, // Copy to this X coordinate
  69                 0, // Copy to this Y coordinate
  70                 width, // Copy this width
  71                 height, // Copy this height
  72                 &dcScreen, // From where do we copy?
  73                 x, // What's the X offset in the original DC?
  74                 y  // What's the Y offset in the original DC?
  75               );
  76
  77     // Select the Bitmap out of the memory DC by selecting a new
  78     // uninitialized Bitmap
  79     memDC.SelectObject(wxNullBitmap);
  80 #endif // #ifdef __WXMAC__
  81
  82     return screenshot;
  83 }
  84
  85 /* static */
  86 wxBitmap AutoCaptureMechanism::Capture(wxRect rect)
  87 {
  88     wxPoint origin = rect.GetPosition();
  89     return Capture(origin.x, origin.y, rect.GetWidth(), rect.GetHeight());
  90 }
  91
  92 void AutoCaptureMechanism::CaptureAll()
  93 {
  94     // start from the first page
  95     m_notebook->SetSelection(0);
  96     wxYield();
  97
  98     for (ControlList::iterator it = m_controlList.begin();
  99          it != m_controlList.end();
 100          ++it)
 101     {
 102         Control &ctrl = *it;
 103
 104         if (ctrl.flag == AJ_TurnPage)    // Turn to next page
 105         {
 106             m_notebook->SetSelection(m_notebook->GetSelection() + 1);
 107             wxYield();
 108             continue;
 109         }
 110
 111         // create the screenshot
 112         wxBitmap screenshot = Capture(ctrl);
 113         if (ctrl.flag & AJ_Union)
 114             screenshot = Union(screenshot, Capture(*(++it)));
 115
 116         // and save it
 117         Save(screenshot, ctrl.name);
 118     }
 119 }
 120
 121 wxBitmap AutoCaptureMechanism::Capture(Control& ctrl)
 122 {
 123     if (ctrl.name == wxT(""))  // no manual specification for the control name
 124     {
 125         // Get its name from wxRTTI
 126         ctrl.name = ctrl.ctrl->GetClassInfo()->GetClassName();
 127     }
 128
 129     int choice = wxNO;
 130
 131     // for drop-down controls we need the help of the user
 132     if (ctrl.flag & AJ_Dropdown)
 133     {
 134         wxString caption = _("Drop-down screenshot...");
 135         wxString msg =
 136             wxString::Format(_("Do you wish to capture the drop-down list of '%s' ?\n\nIf you click YES you must drop-down the list of '%s' in 3 seconds after closing this message box.\nIf you click NO the screenshot for this control won't contain its drop-down list."),
 137                              ctrl.name, ctrl.name);
 138
 139         choice = wxMessageBox(msg, caption, wxYES_NO, m_notebook);
 140         if (choice == wxYES)
 141         {
 142             using std::clock;
 143             using std::clock_t;
 144
 145             // Wait for 3 seconds
 146             clock_t start = clock();
 147             while (clock() - start < CLOCKS_PER_SEC * 3)
 148                 wxYieldIfNeeded();
 149         }
 150     }
 151
 152     wxRect rect = GetRect(ctrl.ctrl, ctrl.flag);
 153
 154     // Do some rect adjust so it can include the dropdown list;
 155     // currently this only works well under MSW; not adjusted for Linux and Mac OS
 156     if (ctrl.flag & AJ_Dropdown && choice == wxYES)
 157     {
 158 //          #ifdef __WXMSW__
 159         int h = rect.GetHeight();
 160         rect.SetHeight(h * 4);
 161 //          #endif
 162     }
 163
 164     // cut off "wx" and change the name into lowercase.
 165     // e.g. wxButton will have a name of "button" at the end
 166     ctrl.name.StartsWith(_T("wx"), &(ctrl.name));
 167     ctrl.name.MakeLower();
 168
 169     // take the screenshot
 170     wxBitmap screenshot = Capture(rect);
 171
 172     if (ctrl.flag & AJ_RegionAdjust)
 173         PutBack(ctrl.ctrl);
 174
 175     return screenshot;
 176 }
 177
 178 wxBitmap AutoCaptureMechanism::Union(wxBitmap pic1, wxBitmap pic2)
 179 {
 180     int w1, w2, h1, h2, w, h;
 181     w1 = pic1.GetWidth();
 182     w2 = pic2.GetWidth();
 183     h1 = pic1.GetHeight();
 184     h2 = pic2.GetHeight();
 185
 186     const int gap_between = 20;
 187
 188     w = (w1 >= w2) ? w1 : w2;
 189     h = h1 + h2 + gap_between;
 190
 191     wxBitmap result(w, h, -1);
 192
 193     wxMemoryDC dstDC;
 194     dstDC.SelectObject(result);
 195
 196     dstDC.DrawBitmap(pic1, 0, 0, false);
 197     dstDC.DrawBitmap(pic2, 0, h1 + gap_between, false);
 198
 199     dstDC.SelectObject(wxNullBitmap);
 200
 201     wxMemoryDC maskDC;
 202     wxBitmap mask(w, h, 1);
 203     maskDC.SelectObject(mask);
 204
 205     maskDC.SetPen(*wxTRANSPARENT_PEN);
 206     maskDC.SetBrush(*wxBLACK_BRUSH);
 207     maskDC.DrawRectangle(0, 0, w + 1, h + 1);
 208
 209     maskDC.SetBrush(*wxWHITE_BRUSH);
 210     maskDC.DrawRectangle(0, 0, w1, h1);
 211     maskDC.DrawRectangle(0, h1 + gap_between, w2, h2);
 212     maskDC.SelectObject(wxNullBitmap);
 213
 214     result.SetMask(new wxMask(mask));
 215
 216     return result;
 217 }
 218
 219 void AutoCaptureMechanism::Save(wxBitmap screenshot, wxString fileName)
 220 {
 221     // make sure m_dir exists
 222     if (!wxDirExists(m_dir))
 223         wxMkdir(m_dir);
 224
 225     wxFileName fullFileName(m_dir, fileName + ".png");
 226
 227     // do not overwrite already existing files with this name
 228     while (fullFileName.FileExists())
 229         fullFileName.SetName(fullFileName.GetName() + "_");
 230
 231     // save the screenshot as a PNG
 232     screenshot.SaveFile(fullFileName.GetFullPath(), wxBITMAP_TYPE_PNG);
 233 }
 234
 235 wxRect AutoCaptureMechanism::GetRect(wxWindow* ctrl, int flag)
 236 {
 237     if (flag & AJ_RegionAdjust)
 238     {
 239         wxWindow * parent = ctrl->GetParent();
 240         wxSizer * sizer = parent->GetSizer();
 241
 242         if (sizer)
 243         {
 244             sizer->Detach(ctrl);
 245
 246             /*
 247             +---------+-----------+---------+
 248             |    0    |   label   |    1    |
 249             +---------+-----------+---------+
 250             |  label  |    ctrl   |  label  |
 251             +---------+-----------+---------+
 252             |    2    |   label   |    3    |
 253             +---------+-----------+---------+
 254            */
 255
 256             m_grid = new wxFlexGridSizer(3, 3, m_border, m_border);
 257
 258             wxStaticText* l[4];
 259
 260             for (int i = 0; i < 4; ++i)
 261                 l[i] = new wxStaticText(parent, wxID_ANY, wxT(" "));
 262
 263             m_grid->Add(l[0]);
 264             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 265             m_grid->Add(l[1]);
 266             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 267             m_grid->Add(ctrl);
 268             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 269             m_grid->Add(l[2]);
 270             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 271             m_grid->Add(l[3]);
 272
 273             sizer->Add(m_grid);
 274             parent->SetSizer(sizer);
 275             parent->Layout();
 276
 277             parent->Refresh();
 278             wxYield();
 279
 280             return wxRect(l[0]->GetScreenRect().GetBottomRight(),
 281                     l[3]->GetScreenRect().GetTopLeft());
 282
 283         }
 284         else  // Actually it won't get here working with the current guiframe.h/guiframe.cpp
 285         {
 286             return ctrl->GetScreenRect().Inflate(m_border);
 287         }
 288     }
 289     else
 290     {
 291        return ctrl->GetScreenRect().Inflate(m_border);
 292     }
 293 }
 294
 295 void AutoCaptureMechanism::PutBack(wxWindow * ctrl)
 296 {
 297     m_grid->Detach(ctrl);
 298
 299     wxSizerItemList children = m_grid->GetChildren();
 300
 301     for (wxSizerItemList::iterator it = children.begin(); it != children.end(); ++it)
 302     {
 303         wxSizerItem* item = *it;
 304         if (item->IsWindow()) delete (*it)->GetWindow();
 305     }
 306
 307     wxSizer * sizer = ctrl->GetParent()->GetSizer();
 308     sizer->Detach(m_grid);
 309     delete m_grid;
 310     sizer->Add(ctrl);
 311 }
 312